<template>
  <el-breadcrumb class="app-breadcrumb" separator="/">
    <transition-group name="breadcrumb">
      <el-breadcrumb-item v-for="(item,index) in levelList" v-if="item.meta.title" :key="item.path">
        <span v-if="item.redirect==='noredirect'||index==levelList.length-1" style="color: rgba(255, 255, 255, .5);" class="no-redirect">{{
        item.meta.title }}</span>
        <router-link v-else :to="item.redirect||item.path" class="link-color">{{ item.meta.title }}</router-link>
      </el-breadcrumb-item>
    </transition-group>
  </el-breadcrumb>
</template>

<script>
export default {
  data() {
    return {
      levelList: null
    }
  },
  watch: {
    $route() {
      this.getBreadcrumb()
    }
  },
  created() {
    this.getBreadcrumb()
  },
  methods: {
    getBreadcrumb() {
      let matched = this.$route.matched.filter(item => item.name)
      const first = matched[0]
      if (first && first.name !== 'dashboard') {
        matched = [{
          path: '/dashboard',
          meta: {
            title: 'Dashboard'
          }
        }].concat(matched)
      }
      this.levelList = matched
    }
  }
}

</script>

<style rel="stylesheet/scss" lang="scss" scoped>
  .app-breadcrumb.el-breadcrumb {
    display: inline-block;
    font-size: 14px;
    line-height: 50px;
    margin-left: 10px;

    .link-color {
      color: rgba(255, 255, 255, .8);

      &:link,
      &:hover {
        color: rgba(255, 255, 255, .8);
      }
    }

    .no-redirect {
      color: #97a8be;
      cursor: text;
    }
  }

</style>
